Home / 21,170.70-31,756.05-19,566.90

Finding the Fourth Proportional to 21,170.70, 31,756.05 and 19,566.90

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Solution

The fourth proportional to 21,170.70, 31,756.05 and 19,566.90 is: 29,350.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,170.70 : 31,756.05 = 19,566.90 : x
  2. Step 2: Convert to fraction form
    21,170.70/31,756.05 = 19,566.90/x
  3. Step 3: Cross multiply
    21,170.70x = 31,756.05 × 19,566.90
  4. Step 4: Simplify right side
    21,170.70x = 621,367,454.75
  5. Step 5: Solve for x
    x = 621,367,454.75/21,170.70
  6. Step 6: Final answer
    x = 29,350.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.